Painful mass in the thigh.
D000293:Adolescent; D005260:Female; D005266:Femoral Neoplasms / Q000532:radiotherapy*; D005500:Follow-Up Studies; D006801:Humans; D016403:Lymphoma, Large B-Cell, Diffuse / Q000175:diagnosis; D009362:Neoplasm Metastasis; D011379:Prognosis